Product Introduction

The KH.SZ-DDM Industrial Online Electrical Conductivity (EC) Sensor is a high-precision digital instrument designed for continuous monitoring of electrical conductivity in industrial, environmental, and chemical process applications. Using advanced electrolytic conductivity measurement technology integrated with a microcontroller-based digital processing circuit, the sensor delivers stable, accurate real-time EC data with automatic temperature compensation.

Featuring an IP68-rated waterproof design, the KH.SZ-DDM supports long-term submersion up to 60 meters, suitable for reservoirs, rivers, wastewater treatment systems, chemical tanks, pipelines, and industrial processes. Real-time EC readings are transmitted via RS485 Modbus RTU, enabling seamless integration with PLC, DCS, SCADA, and industrial IoT monitoring platforms.

Key Features

• High-Precision Conductivity Measurement
  Electrolytic conductivity technology ensures accurate EC measurement across wide ranges up to 200 or 500 mS/cm.
• Automatic Temperature Compensation
  Maintains stable measurement accuracy from 0–60°C under varying environmental conditions.
• Fast Response Time
  Data stabilizes within 30 seconds, ideal for real-time monitoring applications.
• Excellent Repeatability and Low Drift
  Zero drift ±1%, range drift ±1%, with fine measurement resolution for reliable readings.
• Long-Term Measurement Stability
  Voltage stability within ±1% and actual sample comparison accuracy ±1% for continuous operation.
• IP68 Waterproof Design
  Supports long-term submersion up to 60 meters in harsh field environments.
• Industrial Communication Interface
  RS485 Modbus RTU output enables easy integration with PLC, DCS, SCADA, and IoT systems.

Application Scenarios

• Environmental monitoring of rivers, lakes, and reservoirs

• Water treatment plants and wastewater treatment systems

• Industrial process control in chemical, pharmaceutical, and food industries

• Conductivity measurement in saline water, brine, and other industrial liquids

• Online EC monitoring in tanks, pipelines, and laboratory systems

Technical Specifications